only run test_key on ruby 2.0.0 or up
test_key
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34915 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
only run
test_keyon ruby 2.0.0 or upgit-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34915 b2dd03c8-39d4-4d8f-98ff-823fe69b080e